A couple of ideas.
It could be some rogue/corrupt software, e.g. flash doing something on a
web page.
Start up Activity Monitor from Applications/ Utilities and check for
anything using lots of CPU.
It could also be some corruption in your file system and/or 'indexing'
of files to make searching easier.
It's time to boot off an emergency disk and run Disk Utility. I can
never remember the magic keys to hold down to do this - one choice is to
hold down the Option key while rebooting...
Hope this helps
Rob
On 28/2/17 9:44 am, Stephen Chape wrote:
That’s what puzzles me Peter.
I only use it for Excel, Word and PDF files.
My total use is 2.6 GB of my free 5 GB.
On 28 Feb 2017, at 7:24 am, Peter Hinchliffe
<[email protected] <mailto:[email protected]>> wrote:
On 27 Feb 2017, at 11:06 pm, Stephen Chape <[email protected]
<mailto:[email protected]>> wrote:
Every so often my iMac slows down considerably.
I can hear the HD humming away but I have no idea what it is doing.
It seems to happen more often just after start up, but not always.
Sometimes everything grinds almost to a halt and I have to simply
sit and wait.
A couple of weeks ago I uninstalled Intego Net Barrier & Intego
Virus Barrier thinking they were the cause.
However it happened again yesterday several times.
But it has not happened today.
I have checked Activity Monitor and noticed that DropBox seems very
prominent a lot of the time.
There are quite a few websites claiming that DropBox can slow a Mac
down.
I am not convinced that DropBox is the culprit though because it is
so popular and well respected.
Any ideas please folks ?
iMac 21.5 inch Late 2012.
i7 processor 3.1GHz
16GB RAM
Latest Sierra macOS
Regards,
Stephen Chape
Dropbox could well be involved, depending on what you have stored
there. Just as an example, Dropbox has the annoying habit of asking
you if you want to store your photos there, every time you attach a
mobile device or an SD card. A friend of mine brought her work’s
network to its knees after unwittingly agreeing to this, at which
point Dropbox commenced syncing over 1200 photos to its servers. The
activity saturated their little wireless router, rendering the
network virtually unusable while her computer was on.
I’m not saying this is necessarily the problem in your case, but it
would be instructive to have a look at just what you have in your
Dropbox folder. Dropbox is certainly a safe, reliable service, but
like everything it does need a little care and attention. I make sure
I only use it for smallish files. The really important stuff I keep
at home.
Peter Hinchliffe Apwin Computer Services
FileMaker Pro Solutions Developer
Perth, Western Australia
Phone (618) 9332 6482 Mob 0403 046 948
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Stephen Chape
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